Cybercriminals behind a new ransomware program called CoinVault are trying out a new psychological tactic to convince users to pay up — freebies. The new threat was discovered by security researchers from Webroot and is similar in functionality to more prevalent ransomware programs like CryptoWall. Users are asked to pay 0.5 bitcoins — around $200 at the current exchange rate — in order to receive the key that decrypts their files. The program’s one-file-for-free feature is most likely intended to reassure victims that the program’s creators have the ability to decrypt the files.”]